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举一反三
【单选题】Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the date palm，whose parents may have provided food for the besieged Jews at Masa...
A.
Discovering new species.
B.
Protecting rare species.
C.
Restoring extinct species.
D.
Reforming existing species.
【单选题】Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the date palm，whose parents may have provided food for the besieged Jews at Masa...
A.
the attempt to grow the Judean palm date will end in failure
B.
the effort to reintroduce the Judean palm date is sure to pay off
C.
the researchers are likely to create a new species of the Judean palm date
D.
the researchers stand a chance of success to renew the Judean palm date
【单选题】Passage One Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the date palm，whose parents may have provided fo...
A.
the attempt to grow the Judean palm date will end in failure
B.
the effort to reintroduce the Judean palm date is sure to pay off
C.
the researchers are likely to create a new species of the Judean palm date
D.
the researchers stand a chance of success to renew the Judean palm date
【单选题】Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the date palm，whose parents may have provided food for the besieged Jews at Masa...
A.
It will be made clear within a year or two.
B.
It will remain a myth for at least a decade.
C.
It won’t be known until several years later.
D.
It won’t be decided without ancient knowledge.
相关题目：
【单选题】滚珠丝杠副相对于普通丝杠，下列哪个不属于滚珠丝杠的特点：（）
A.
摩擦损失小
B.
可以实现自锁
C.
制造复杂
D.
可完全消除间隙
【单选题】Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the date palm，whose parents may have provided food for the besieged Jews at Masa...
A.
Discovering new species.
B.
Protecting rare species.
C.
Restoring extinct species.
D.
Reforming existing species.
【单选题】Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the date palm，whose parents may have provided food for the besieged Jews at Masa...
A.
the attempt to grow the Judean palm date will end in failure
B.
the effort to reintroduce the Judean palm date is sure to pay off
C.
the researchers are likely to create a new species of the Judean palm date
D.
the researchers stand a chance of success to renew the Judean palm date
【单选题】Passage One Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the date palm，whose parents may have provided fo...
A.
the attempt to grow the Judean palm date will end in failure
B.
the effort to reintroduce the Judean palm date is sure to pay off
C.
the researchers are likely to create a new species of the Judean palm date
D.
the researchers stand a chance of success to renew the Judean palm date
【单选题】张骞第一次出使西域,打通“丝绸之路”的时间是__________。
A.
公元前138年
B.
公元前119年
C.
公元前127年
D.
公元前107年
【单选题】滚珠丝杠副相对于普通丝杠，下列哪个不属于滚珠丝杠的特点：（）
A.
摩擦损失小
B.
可以实现自锁
C.
制造复杂
D.
可完全消除间隙
【单选题】张骞第一次出使西域，打通“丝绸之路”的时间是()。
A.
公元前138年
B.
公元前119年
C.
公元前127年
D.
公元前107年
【判断题】丝瓜有普通丝瓜和有棱丝瓜两个栽培品种。( )
A.
正确
B.
错误
【单选题】滚珠丝杠副相对于普通丝杠,下列不属于滚珠丝杠特点的是( )
A.
摩擦损失小
B.
可以实现自锁
C.
制造复杂
D.
可完全消除间隙
【单选题】中原王朝致力打通丝绸之路的动机是（）
A.
获取更大的商业利益
B.
保障中原王朝的军事安全
C.
向西方传播华夏文化
D.
对西方奢侈品的追求
【单选题】滚珠丝杠副相对于普通丝杠，下列（ ）不属于滚珠丝杠的特点。
A.
能消除轴向间隙
B.
制造复杂
C.
摩擦损失小
D.
能实现自锁
【单选题】普通丝锥切削部分的前角为（ ）。
A.
5°～8°
B.
8°～10°
C.
9°～11°
D.
10°～12°
【单选题】Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the date palm，whose parents may have provided food for the besieged Jews at Masa...
A.
It will be made clear within a year or two.
B.
It will remain a myth for at least a decade.
C.
It won’t be known until several years later.
D.
It won’t be decided without ancient knowledge.
【单选题】丝瓜在我国栽培比较普遍，丝瓜分普通丝瓜和（ ）。
A.
葫芦丝瓜
B.
鲜花丝瓜
C.
有棱丝瓜
D.
千层丝瓜